28471246 has 16 divisors (see below), whose sum is σ = 44163504. Its totient is φ = 13757184.

The previous prime is 28471211. The next prime is 28471249. The reversal of 28471246 is 64217482.

It is a happy number.

It is a super-2 number, since 2×28471246² = 1621223697585032, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28471249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6636 + ... + 10048.

It is an arithmetic number, because the mean of its divisors is an integer number (2760219).

Almost surely, 2^28471246 is an apocalyptic number.

28471246 is a deficient number, since it is larger than the sum of its proper divisors (15692258).

28471246 is a wasteful number, since it uses less digits than its factorization.

28471246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3555.

The product of its digits is 21504, while the sum is 34.

The square root of 28471246 is about 5335.8453875651. The cubic root of 28471246 is about 305.3529766331.

The spelling of 28471246 in words is "twenty-eight million, four hundred seventy-one thousand, two hundred forty-six".